21287952

素因数分解:

$2^4\times 3^2\times 7^3\times {\mathrm{431}}^1$

素因数の和:466

約数の個数: 120

約数和(自身を含む): 69638400

約数和(自身を除く): 48350448

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 49, 56, 63, 72, 84, 98, 112, 126, 144, 147, 168, 196, 252, 294, 336, 343, 392, 431, 441, 504, 588, 686, 784, 862, 882, 1008, 1029, 1176, 1293, 1372, 1724, 1764, 2058, 2352, 2586, 2744, 3017, 3087, 3448, 3528, 3879, 4116, 5172, 5488, 6034, 6174, 6896, 7056, 7758, 8232, 9051, 10344, 12068, 12348, 15516, 16464, 18102, 20688, 21119, 24136, 24696, 27153, 31032, 36204, 42238, 48272, 49392, 54306, 62064, 63357, 72408, 84476, 108612, 126714, 144816, 147833, 168952, 190071, 217224, 253428, 295666, 337904, 380142, 434448, 443499, 506856, 591332, 760284, 886998, 1013712, 1182664, 1330497, 1520568, 1773996, 2365328, 2660994, 3041136, 3547992, 5321988, 7095984, 10643976, 21287952]

約数ペア:

[(1, 21287952), (2, 10643976), (3, 7095984), (4, 5321988), (6, 3547992), (7, 3041136), (8, 2660994), (9, 2365328), (12, 1773996), (14, 1520568), (16, 1330497), (18, 1182664), (21, 1013712), (24, 886998), (28, 760284), (36, 591332), (42, 506856), (48, 443499), (49, 434448), (56, 380142), (63, 337904), (72, 295666), (84, 253428), (98, 217224), (112, 190071), (126, 168952), (144, 147833), (147, 144816), (168, 126714), (196, 108612), (252, 84476), (294, 72408), (336, 63357), (343, 62064), (392, 54306), (431, 49392), (441, 48272), (504, 42238), (588, 36204), (686, 31032), (784, 27153), (862, 24696), (882, 24136), (1008, 21119), (1029, 20688), (1176, 18102), (1293, 16464), (1372, 15516), (1724, 12348), (1764, 12068), (2058, 10344), (2352, 9051), (2586, 8232), (2744, 7758), (3017, 7056), (3087, 6896), (3448, 6174), (3528, 6034), (3879, 5488), (4116, 5172)]